Flowcharts (pie and vertical)

I have been searching for some days on internet a way to make flow charts(pie and vertical) using html and css, but I didn't find anything.Did someone make these types of charts in html and css and could help me ?

Finally I found a way to do this charts but I want the values to be the values computed on servlet side.For vertical pie is working but for pie chart no(nothing displayed).Also I want the scale to be at my max value (("${sumC}")=2000),now it is at 60.
Could anyone hep me with thos problems?
Thank you very much!